Analysis Overview
SHA256
027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f
Threat Level: Known bad
The file 027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f was found to be: Known bad.
Malicious Activity Summary
NanoCore
Drops startup file
Adds Run key to start application
Checks whether UAC is enabled
AutoIT Executable
Suspicious use of SetThreadContext
Drops file in Program Files directory
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: GetForegroundWindowSpam
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-07 18:14
Signatures
AutoIT Executable
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-07 18:14
Reported
2024-08-07 18:17
Platform
win7-20240704-en
Max time kernel
136s
Max time network
150s
Command Line
Signatures
NanoCore
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Monitor = "C:\\Program Files (x86)\\SMTP Monitor\\smtpmon.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1924 set thread context of 2836 | N/A | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\SMTP Monitor\smtpmon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| File created | C:\Program Files (x86)\SMTP Monitor\smtpmon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe
"C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9C20.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "SMTP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp"
Network
| Country | Destination | Domain | Proto |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp |
Files
memory/1924-0-0x00000000000B0000-0x00000000000B1000-memory.dmp
memory/2836-1-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2836-2-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2836-9-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2836-8-0x0000000000400000-0x0000000000438000-memory.dmp
memory/2836-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2836-10-0x0000000073A32000-0x0000000073A34000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp9C20.tmp
| MD5 | c6f0625bf4c1cdfb699980c9243d3b22 |
| SHA1 | 43de1fe580576935516327f17b5da0c656c72851 |
| SHA256 | 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576 |
| SHA512 | 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969 |
C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp
| MD5 | ffa9e95100598072ca693c672478895f |
| SHA1 | 518514c3112c51b2b21d36d3262bec72e83d025d |
| SHA256 | 1e45d509d390405f93e9f3b64ff497e61cf9bf791c015dde4499184b7a681eb3 |
| SHA512 | 010d14ae46a23cef14cf1de9a06c8e6ff26ca86c10ebdd3d5f16f4ffbeacc3df7ca18fafda097e00bf747fb997c5c4f9d62646e47a3b501da7c630689c28d6df |
memory/2836-21-0x0000000073A32000-0x0000000073A34000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-07 18:14
Reported
2024-08-07 18:16
Platform
win10v2004-20240802-en
Max time kernel
135s
Max time network
144s
Command Line
Signatures
NanoCore
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PasswordOnWakeSettingFlyout.url | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\NAS Monitor = "C:\\Program Files (x86)\\NAS Monitor\\nasmon.exe" | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Checks whether UAC is enabled
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2164 set thread context of 4980 | N/A | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\NAS Monitor\nasmon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| File opened for modification | C:\Program Files (x86)\NAS Monitor\nasmon.exe | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe
"C:\Users\Admin\AppData\Local\Temp\027078bc7bea9b1d74cb3e20a7b13ebdd12e8e2998a194f32ccfe17f1140441f.exe"
C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB030.tmp"
C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "NAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB08F.tmp"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.190.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp | |
| NL | 213.184.126.143:1993 | tcp |
Files
memory/4980-0-0x0000000000370000-0x00000000003A8000-memory.dmp
memory/2164-5-0x00000000009B0000-0x00000000009B1000-memory.dmp
memory/4980-6-0x0000000074412000-0x0000000074413000-memory.dmp
memory/4980-7-0x0000000074410000-0x00000000749C1000-memory.dmp
memory/4980-8-0x0000000074410000-0x00000000749C1000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpB030.tmp
| MD5 | c6f0625bf4c1cdfb699980c9243d3b22 |
| SHA1 | 43de1fe580576935516327f17b5da0c656c72851 |
| SHA256 | 8dfc4e937f0b2374e3ced25fce344b0731cf44b8854625b318d50ece2da8f576 |
| SHA512 | 9ef2dbd4142ad0e1e6006929376ecb8011e7ffc801ee2101e906787d70325ad82752df65839de9972391fa52e1e5974ec1a5c7465a88aa56257633ebb7d70969 |
C:\Users\Admin\AppData\Local\Temp\tmpB08F.tmp
| MD5 | 3144131f2fe1c35ad2aafff167a26f59 |
| SHA1 | 959879de38aed11bc08b7725500d2c8c953e80bf |
| SHA256 | d20aeda9cadd332268afc89cbee76f297b00f061bf69a2f558a8d7657e4c41d7 |
| SHA512 | 27a07c8f953cc4fde9ec348d3f5c4621ab56ff281b778bc7ac95dd808d5f0eea6969c5e4662efc00a6416c8bcf4d8e3892be5c99e603e36f8aa49d2a957206fb |
memory/4980-19-0x0000000074412000-0x0000000074413000-memory.dmp
memory/4980-20-0x0000000074410000-0x00000000749C1000-memory.dmp